Use of Microelectrode Arrays to Directly Measure Diffusion of Ions in Solid Electrolytes: Physical Diffusion of Ag+ in a Solid Polymer Electrolyte

Abstract

We report experiments which demonstrate direct measurement of diffusion of molecular or ionic species in solid electrolyte media. A microelectrode array of closely spaced (1.4 microns) Pt microelectrodes allows direct measurement of the movement of Ag+ in aqueous electrolyte and in the solid polymer electrolytes, LiCF3SO3/MEEP at 298 K with a molar ratio of LiCF3SO3 to polymer repeat unit of 1 to 4 and LiCF3SO3/PEO at 352 K and a molar ratio of LiCF3SO3 to polymer repeat unit of 1 to 8.

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Document Details

Document Type
Technical Report
Publication Date
May 16, 1990
Accession Number
ADA222026

Entities

People

  • Daniel R. Talham
  • Mark S. Wrighton
  • Richard M Crooks
  • Vince Cammarata

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Atmospheres
  • Chemical Synthesis
  • Chemistry
  • Coefficients
  • Diffusion
  • Diffusion Coefficient
  • Electrochemical Cells
  • Electrodes
  • Electrolytes
  • Materials
  • Measurement
  • Melting Point
  • Military Research
  • Physical Chemistry
  • Polymers
  • Simulations
  • United States

Fields of Study

  • Materials science

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies

Technology Areas

  • Space
  • Space - Hall-Effect Thruster